Moderate snow overnight means a treacherous commute

High pressure east of New England brought us a very cold air mass. This is the reason we're talking about snow tonight. The National Weather Service has issued a Winter Storm Warning late tonight through Tuesday for the potential of 6 or more inches of snow. A low pressure area with a weather front moves through midday tomorrow. As it departs, some snow showers on the back side will continue in the Berkshires into Tuesday evening.

Accumulations by daybreak will reach 4 inches for downtown Springfield, with up to 6 inches in the I-91 corridor north of the Mt. Holyoke range. Higher amounts likely for the hill towns, especially in Franklin County.

This system will start mixing with some sleet, and eventually rain during tomorrow morning. By Tuesday afternoon, everything changes over to just rain across downtown Springfield, but a wintry mix will persist for the hill towns, adding onto their final snowfall totals and potentially pushing some higher elevations close to 10 inches.

The first day of spring is Wednesday, but it will continue to stay chilly. High temperatures remain in the upper-30s for a majority of the week, about 10 degrees below normal.